trap·​e·​zoid | \ˈtra-pə-ˌzȯid \

Definition of trapezoid 

1a : a quadrilateral having only two sides parallel

b British : trapezium sense 1a

2 : a bone in the wrist at the base of the metacarpal of the index finger

Illustration of trapezoid

Illustration of trapezoid

trapezoid 1a

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Other Words from trapezoid

trapezoidal \ ˌtra-​pə-​ˈzȯi-​dᵊl \ adjective

Examples of trapezoid in a Sentence

Recent Examples on the Web

To the north, where the facade meets Milan’s skyline and becomes mostly glass, cantilevering over the street, the block breaks into a zigzag of shifting floor plates, rectangles and trapezoids, the whole building wedged onto a triangular plot. Michael Kimmelman, New York Times, "Shape-Shifting Art Tower Completes Prada’s City Within a City," 15 June 2018 The piece is the anchor for Butterfly Park, a trapezoid of grass and flowers created by neighborhood residents with the support of the Milwaukee Christian Center, which also commissioned Tia's new mural. Crocker Stephenson, Milwaukee Journal Sentinel, "Better Angels: Tia Richardson's newest mural is one neighborhood's vision of better things to come," 5 July 2018 The Montreal native was the last real standup goaltender as the position moved almost exclusively to the butterfly technique, and his puck-handling prowess led the NHL to institute the trapezoid behind the net as a way to increase scoring. Stephen Whyno,, "Gary Bettman, Martin Brodeur, Willie O'Ree top Hockey Hall of Fame class," 26 June 2018 Some of them are straight lines, some are spirals and rectangles and trapezoids, and some are animals: whales, ducks, hummingbirds. Angela Chen, The Verge, "Today’s Google Doodle celebrates the scientist who studied the mysterious desert lines of Peru," 15 May 2018 The monument, a 5,000-pound trapezoid of white concrete, is in a small clearing near the center of this tiny Berkshires town, overlooking the Housatonic River. Dugan Arnett,, "Things aren’t looking up for UFO monument in tiny town," 9 May 2018 The bedroom’s shape could be described as a parallelogram attached to a trapezoid. Joan Walden,, "Property of the Week: 290 Mountain Spring Road, Farmington," 13 Apr. 2018 The aluminum green trapezoid represents greenspace that could occupy the void where the Trade Center plaza once stood. William Neuman, New York Times, "A Modern Touch at City Hall With Help From a Museum Seeking Money," 5 Apr. 2018 In true Christo form, the trapezoid will rest on a floating platform in the middle of the Serpentine Lake, totally and blissfully out of the context of its natural surroundings. Liz Stinson, Curbed, "Christo’s newest floating sculpture is now under construction in London," 9 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trapezoid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of trapezoid

circa 1706, in the meaning defined at sense 1b

History and Etymology for trapezoid

New Latin trapezoïdes, from Greek trapezoeidēs trapezium-shaped, from trapeza table

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Time Traveler for trapezoid

The first known use of trapezoid was circa 1706

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More Definitions for trapezoid



English Language Learners Definition of trapezoid

: a four-sided shape that has two sides that are parallel and two sides that are not parallel


trap·​e·​zoid | \ˈtra-pə-ˌzȯid \

Kids Definition of trapezoid

: a flat geometric figure with four sides but with only two sides parallel


trap·​e·​zoid | \ˈtrap-ə-ˌzȯid \

Medical Definition of trapezoid 

: a bone in the distal row of the carpus at the base of the index finger

called also lesser multangular, trapezoid bone, trapezoideum

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